This all aluminum adapter fits inside the outlet of a VNT-17 so that a standard hose with clamp can be used, rather than the ~$200 VNT-17 clip-connector hose. This adapter was specifically designed for ALH owners who want to do a VNT-17 upgrade. With this adapter the stock ALH turbocharger outlet hose can be used. Please Note: in order to use this adapter you must clock/rotate the compressor housing on the VNT-17 as well as modify (cut) your stock ALH hose.